{"id":4469,"date":"2019-05-24T02:31:09","date_gmt":"2019-05-24T02:31:09","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=4469"},"modified":"2024-07-11T02:52:17","modified_gmt":"2024-07-11T02:52:17","slug":"espcex-aman-2018-2019","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/universidades-2019\/espcex-aman-2018-2019\/","title":{"rendered":"ESPCEX – AMAN – 2018\/2019"},"content":{"rendered":"

ESPCEX-AMAN-2018\/2019<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

<\/a> <\/p>\n

Para ingressar na AMAN o jovem dever\u00e1 realizar um\u00a0concurso p\u00fablico\u00a0para a\u00a0<\/b><\/span><\/span><\/span>Escola Preparat\u00f3ria de Cadetes do Ex\u00e9rcito (EsPCEx)\u00a0<\/b><\/span><\/span><\/span>onde ir\u00e1 cursar um ano de Ensino Superior e, obtendo aproveitamento,\u00a0<\/b><\/span><\/span><\/span>seguir\u00e1 para a AMAN<\/b><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/p>\n

A\u00a0<\/b><\/span><\/span><\/span>EsPCEX<\/b><\/span><\/span><\/span>\u00a0est\u00e1 localizada na cidade de\u00a0<\/b><\/span><\/span><\/span>Campinas \u2013 SP<\/b><\/span><\/span><\/span>. Durante o curso, o jovem estar\u00e1 na condi\u00e7\u00e3o de aluno (isto equivale a uma\u00a0<\/b><\/span><\/span><\/span>gradua\u00e7\u00e3o entre as de 2\u00ba Sargento e 3\u00ba Sargento).<\/b><\/span><\/span><\/span><\/p>\n

A Escola Preparat\u00f3ria de Cadetes do Ex\u00e9rcito (EsPCEx), localizada na cidade de Campinas, SP, \u00e9 o estabelecimento de ensino militar do Ex\u00e9rcito respons\u00e1vel por selecionar e preparar os jovens para o ingresso no Curso de Forma\u00e7\u00e3o de Oficiais das Armas, do Quadro de Material B\u00e9lico ou do Servi\u00e7o de Intend\u00eancia.<\/b><\/span><\/span><\/span><\/p>\n

A sele\u00e7\u00e3o \u00e9 feita anualmente, por meio de um concurso de admiss\u00e3o de \u00e2mbito nacional, no qual s\u00e3o oferecidas cerca de 400 vagas para o sexo masculino e 40 vagas para o sexo feminino.<\/b><\/span><\/span><\/span><\/p>\n

Algumas condi\u00e7\u00f5es para inscri\u00e7\u00e3o:<\/b><\/span><\/span><\/span><\/p>\n

ser brasileiro nato, ambos os sexos;<\/b><\/span><\/span><\/span><\/p>\n

possuir idade de, no m\u00ednimo, 17 (dezessete) e, no m\u00e1ximo, 22(vinte e dois) anos, completados at\u00e9 31 de dezembro do ano da matr\u00edcula;<\/b><\/span><\/span><\/span><\/p>\n

ter conclu\u00eddo ou estar cursando (no ano da inscri\u00e7\u00e3o) a 3\u00aa s\u00e9rie do Ensino M\u00e9dio;<\/b><\/span><\/span><\/span><\/p>\n

As inscri\u00e7\u00f5es para o concurso acontecem anualmente nos meses de maio a junho, e s\u00e3o feitas pela internet por interm\u00e9dio do s\u00edtio:\u00a0<\/b><\/span><\/span><\/span>www.espcex.ensino.eb.br<\/b><\/u><\/span><\/span><\/span><\/a>.<\/b><\/span><\/span><\/span><\/p>\n

O concurso \u00e9 composto por exame intelectual, inspe\u00e7\u00e3o de sa\u00fade, exame de aptid\u00e3o f\u00edsica, comprova\u00e7\u00e3o de requisitos biogr\u00e1ficos e averigua\u00e7\u00e3o de idoneidade moral.<\/b><\/span><\/span><\/span><\/p>\n

As provas do exame intelectual geralmente ocorrem em meados de setembro, e os candidatos classificados dentro do n\u00famero de vagas s\u00e3o convocados para se apresentar na EsPCEx em janeiro do ano seguinte, a fim de submeterem-se \u00e0s demais etapas do concurso de admiss\u00e3o citadas acima.<\/b><\/span><\/span><\/span><\/p>\n

Em caso de aprova\u00e7\u00e3o em todas as etapas da sele\u00e7\u00e3o, o candidato \u00e9 matr\u00edculado e passa a ser militar da ativa do Ex\u00e9rcito Brasileiro, na condi\u00e7\u00e3o de Aluno da EsPCEx. Se concluir o curso com aproveitamento, prosseguir\u00e1 para a Academia Militar das Agulhas Negras (AMAN), em Resende (RJ), onde, ap\u00f3s 4 anos, concluir\u00e1 o Curso de Forma\u00e7\u00e3o e ser\u00e1 declarado Aspirante a Oficial\u00a0 das Armas, do Quadro de Material B\u00e9lico ou do Servi\u00e7o de Intend\u00eancia do Ex\u00e9rcito Brasileiro<\/b><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/p>\n

01-(EsPCEx- AMAN \u2013 SP- RJ \u2013 2018\/19)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Considere uma <\/b><\/span><\/span><\/span>m\u00e1quina t\u00e9rmica X que executa um ciclo termodin\u00e2mico com a realiza\u00e7\u00e3o de<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

trabalho. <\/b><\/span><\/span><\/span>O r<\/b><\/span><\/span><\/span>endimento dessa m\u00e1quina \u00e9 de 40% do rendimento de uma m\u00e1quina Y que funciona<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

segundo o ciclo de Carnot, operando entre duas fontes de calor com temperaturas de<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

27 \u00b0C e 327 \u00b0C. <\/b><\/span><\/span><\/span>Durante <\/b><\/span><\/span><\/span>um ciclo, o calor rejeitado pela m\u00e1quina X para a fonte fria \u00e9 de 500 J,<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

ent\u00e3o o <\/b><\/span><\/span><\/span>trabalho realizado neste ciclo \u00e9 de<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[A] <\/b><\/span><\/span><\/span>100 J. <\/b><\/span><\/span><\/span>[B] <\/b><\/span><\/span><\/span>125 J. <\/b><\/span><\/span><\/span>[C] <\/b><\/span><\/span><\/span>200 J. <\/b><\/span><\/span><\/span>[D] <\/b><\/span><\/span><\/span>500 J. <\/b><\/span><\/span><\/span>[E] <\/b><\/span><\/span><\/span>625 J.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

\u00a0\u00a0<\/span><\/p>\n

02-(EsPCEx- AMAN \u2013 SP- RJ \u2013 2018\/19)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Dois fios longos e retil\u00edneos 1 e 2, fixos e paralelos entre s<\/b><\/span><\/span><\/span>i, est\u00e3o <\/b><\/span><\/span><\/span>dispostos no v\u00e1cuo<\/b><\/span><\/span><\/span>, em<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

uma <\/b><\/span><\/span><\/span>dire\u00e7\u00e3o perpendicular a um plano \u03b1<\/b><\/span><\/span><\/span>. O <\/b><\/span><\/span><\/span>plano \u03b1 cont\u00e9m o ponto C <\/b><\/span><\/span><\/span>conforme <\/b><\/span><\/span><\/span>representad<\/b><\/span><\/span><\/span>o no<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

desenho abaixo. <\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Os <\/b><\/span><\/span><\/span>fios s\u00e3o percorridos por correntes el\u00e9tricas constantes<\/b><\/span><\/span><\/span>, de <\/b><\/span><\/span><\/span>mesmo sentido<\/b><\/span><\/span><\/span>,<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

saindo do plano \u03b1 para o observador. <\/b><\/span><\/span><\/span>O fio 1 \u00e9 percorrido por uma <\/b><\/span><\/span><\/span>corrente el\u00e9trica de intensidade i<\/b><\/span><\/span><\/span>1 <\/b><\/span><\/span><\/sub><\/span>= 6 A <\/b><\/span><\/span><\/span>e o <\/b><\/span><\/span><\/span>fio 2 por uma corrente de intensidade i<\/b><\/span><\/span><\/span>2 <\/b><\/span><\/span><\/sub><\/span>= 8 A. <\/b><\/span><\/span><\/span>O <\/b><\/span><\/span><\/span>m\u00f3dulo do vetor indu\u00e7\u00e3o magn\u00e9tica resultante no ponto C devido \u00e0s correntes i<\/b><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span> e i<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span> \u00e9<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Dado: <\/b><\/span><\/span><\/span>considere a permeabilidade magn\u00e9tica do v\u00e1cuo igual a 4\u00b7\u03c0\u00b710<\/b><\/span><\/span><\/span>-7<\/b><\/span><\/span><\/sup><\/span> T\u00b7m\/A.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[A] <\/b><\/span><\/span><\/span>8\u00b710-7 T. <\/b><\/span><\/span><\/span> [B] <\/b><\/span><\/span>6..10<\/b><\/span><\/span><\/span>-7<\/b><\/span><\/span><\/sup><\/span> <\/b>T [C] <\/b><\/span><\/span>4..10<\/b><\/span><\/span><\/span>-7<\/b><\/span><\/span><\/sup><\/span> T <\/b><\/span><\/span><\/span>[D] <\/b><\/span><\/span>4.10<\/b><\/span><\/span><\/span>-7<\/b><\/span><\/span><\/sup><\/span> <\/b>T [E] <\/b><\/span><\/span>2..10<\/b><\/span><\/span><\/span>-7<\/b><\/span><\/span><\/sup><\/span> T <\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

03-(EsPCEx- AMAN \u2013 SP- RJ \u2013 2018\/19)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

No <\/b><\/span><\/span><\/span>circuito desenhado abaixo, <\/b><\/span><\/span><\/span>temos <\/b><\/span><\/span><\/span>tr\u00eas pilhas ideais ligadas em paralelo que fornecem<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

uma ddp igual a 25 V cada uma. <\/b><\/span><\/span><\/span>Elas <\/b><\/span><\/span><\/span>alimentam tr\u00eas resistores \u00f4hmicos: R<\/b><\/span><\/span><\/span>1 <\/b><\/span><\/span><\/sub><\/span>= 10 \u03a9, R<\/b><\/span><\/span><\/span>2 <\/b><\/span><\/span><\/sub><\/span>= R<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sub><\/span>= 20 \u03a9<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

O amper\u00edmetro, o volt\u00edmetro <\/b><\/span><\/span><\/span>e os <\/b><\/span><\/span><\/span>fios condutores inseridos no circuito s\u00e3o todos ideais. <\/b><\/span><\/span><\/span>As <\/b><\/span><\/span><\/span>leituras<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

indicadas no amper\u00edmetro (A) e no volt\u00edmetro (V) s\u00e3o<\/b><\/span><\/span><\/span>, respectivamente,<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[A] <\/b><\/span><\/span><\/span>5,00 A e 25,00 V.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[B] <\/b><\/span><\/span><\/span>0,50 A e 20,00 V.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[C] <\/b><\/span><\/span><\/span>2,50 A e 16,66 V.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[D] <\/b><\/span><\/span><\/span>1,25 A e 12,50 V<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[E] <\/b><\/span><\/span><\/span>3,75 A e 37,50 V.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

04-(EsPCEx- AMAN \u2013 SP- RJ \u2013 2018\/19)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Dois fios inextens\u00edveis, paralelos, id\u00eanticos<\/b><\/span><\/span><\/span> e de <\/b><\/span><\/span><\/span>massas desprez\u00edveis <\/b><\/span><\/span><\/span>suspendem um bloco regular<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

de <\/b><\/span><\/span><\/span>massa 10 kg formando um p\u00eandulo vertical bal\u00edstico, inicialmente em repouso. <\/b><\/span><\/span><\/span>Um <\/b><\/span><\/span><\/span>projetil<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

de massa igual a 100 g,<\/b><\/span><\/span><\/span> com <\/b><\/span><\/span><\/span>velocidade horizontal, penetra e se aloja no bloco<\/b><\/span><\/span><\/span> e, <\/b><\/span><\/span><\/span>devido ao choque,<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

o conjunto se eleva a uma altura de 80 cm, <\/b><\/span><\/span><\/span>conforme<\/b><\/span><\/span><\/span> figura abaixo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Considere que os fios permane\u00e7am sempre paralelos.<\/b><\/span><\/span><\/span> A <\/b><\/span><\/span><\/span>velocidade do projetil imediatamente antes de entrar no bloco \u00e9<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Dados: <\/b><\/span><\/span><\/span>despreze a resist\u00eancia do ar e considere a acelera\u00e7\u00e3o da gravidade igual a 10 m\/s<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sup><\/span>.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[A] <\/b><\/span><\/span><\/span>224 m\/s. <\/b><\/span><\/span><\/span>[B] <\/b><\/span><\/span><\/span>320 m\/s. <\/b><\/span><\/span><\/span>[C] <\/b><\/span><\/span><\/span>370 m\/s. <\/b><\/span><\/span><\/span>[D] <\/b><\/span><\/span><\/span>380 m\/s. <\/b><\/span><\/span><\/span>[E] <\/b><\/span><\/span><\/span>404 m\/s.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

05-(EsPCEx- AMAN \u2013 SP- RJ \u2013 2018\/19)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

<\/p>\n

06-(EsPCEx- AMAN \u2013 SP- RJ \u2013 2018\/19)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Duas esferas homog\u00eaneas A e B, unidas por um fio ideal na posi\u00e7\u00e3o vertical, <\/b><\/span><\/span><\/span>encontram-se<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

em <\/b><\/span><\/span><\/span>equil\u00edbrio est\u00e1tico completamente imersas em um l\u00edquido homog\u00eaneo em repouso <\/b><\/span><\/span><\/span>de <\/b><\/span><\/span><\/span>densidade<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

1 kg\/dm<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sup><\/span>,<\/b><\/span><\/span><\/span> contido em um <\/b><\/span><\/span><\/span>recipiente <\/b><\/span><\/span><\/span>apoiado na superf\u00edcie da Terra, conforme <\/b><\/span><\/span><\/span>desenho abaixo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

As <\/b><\/span><\/span><\/span>esferas A e B possuem, respectivamente, as massas m<\/b><\/span><\/span><\/span>A <\/b><\/span><\/span><\/sub><\/span>=1 kg e m<\/b><\/span><\/span><\/span>B <\/b><\/span><\/span><\/sub><\/span>= 5 kg.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Sabendo<\/b><\/span><\/span><\/span> que a <\/b><\/span><\/span><\/span>densidade da esfera B \u00e9 de 2,5 kg\/dm<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sup><\/span>, o volume da esfera A \u00e9 de<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Dado: <\/b><\/span><\/span><\/span>considere a acelera\u00e7\u00e3o da gravidade igual a 10 m\/s<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sup><\/span>.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[A] <\/b><\/span><\/span><\/span>2 dm<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sup><\/span>. <\/b><\/span><\/span><\/span>[B] <\/b><\/span><\/span><\/span>3 dm<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sup><\/span>. <\/b><\/span><\/span><\/span>[C] <\/b><\/span><\/span><\/span>4 dm<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sup><\/span>. <\/b><\/span><\/span><\/span>[D] <\/b><\/span><\/span><\/span>5 dm<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sup><\/span>. <\/b><\/span><\/span><\/span>[E] <\/b><\/span><\/span><\/span>6 dm<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sup><\/span>. <\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

07-(EsPCEx- AMAN \u2013 SP- RJ \u2013 2018\/19)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Com <\/b><\/span><\/span><\/span>rela\u00e7\u00e3o \u00e0s ondas, s\u00e3o feitas as seguintes afirma\u00e7\u00f5es:<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

I.<\/b><\/span><\/span><\/span> <\/b>As <\/b><\/span><\/span><\/span>ondas mec\u00e2nicas propagam-se somente em meios materiais.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

II.<\/b><\/span><\/span><\/span> As <\/b><\/span><\/span><\/span>ondas eletromagn\u00e9ticas propagam-se somente no v\u00e1cuo.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

III<\/b><\/span><\/span><\/span>. As <\/b><\/span><\/span><\/span>micro-ondas s\u00e3o ondas que se propagam somente em meios materiais.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Das <\/b><\/span><\/span><\/span>afirma\u00e7\u00f5es acima est\u00e1(\u00e3o) correta(s) apenas a(s)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[A] <\/b><\/span><\/span><\/span>I. <\/b><\/span><\/span><\/span>[B] <\/b><\/span><\/span><\/span>II. <\/b><\/span><\/span><\/span>[C] <\/b><\/span><\/span><\/span>I e III. <\/b><\/span><\/span><\/span>[D] <\/b><\/span><\/span><\/span>I e II. <\/b><\/span><\/span><\/span>[E] <\/b><\/span><\/span><\/span>II e III.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

08-(EsPCEx- AMAN \u2013 SP- RJ \u2013 2018\/19)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

O <\/b><\/span><\/span><\/span>gr\u00e1fico abaixo est\u00e1 associado <\/b><\/span><\/span><\/span>ao <\/b><\/span><\/span>movimento de uma motocicleta e de um carro <\/b><\/span><\/span><\/span>que se<\/b><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

deslocam ao longo de uma estrada retil\u00ednea.<\/b><\/span><\/span><\/span> Em <\/b><\/span><\/span><\/span>t = 0 h ambos se encontram no quil\u00f4metro 0 (zero)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

dessa estrada.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Com <\/b><\/span><\/span><\/span>rela\u00e7\u00e3o a esse gr\u00e1fico, s\u00e3o feitas as seguintes afirma\u00e7\u00f5es:<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

I.<\/b><\/span><\/span><\/span> <\/b>A <\/b><\/span><\/span><\/span>motocicleta percorre a estrada em movimento uniformemente retardado.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

II.<\/b><\/span><\/span><\/span> Entre os instantes 0 h e 2 h, o carro e a motocicleta percorreram<\/b><\/span><\/span><\/span>, respectivamente, <\/b><\/span><\/span><\/span>uma<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

dist\u00e2ncia de 60 km e 120 km.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

III.<\/b><\/span><\/span><\/span> <\/b>A <\/b><\/span><\/span><\/span>velocidade do carro aumenta 30 km\/h a cada hora.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

IV.<\/b><\/span><\/span><\/span> <\/b>O <\/b><\/span><\/span><\/span>carro e a motocicleta voltam a estar na mesma posi\u00e7\u00e3o no instante t = 2 h.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Das <\/b><\/span><\/span><\/span>afirma\u00e7\u00f5es acima est\u00e1(\u00e3o) correta(s) apenas a(s)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

[A] <\/b><\/span><\/span><\/span>IV. <\/b><\/span><\/span><\/span>[B] <\/b><\/span><\/span><\/span>II, III e IV. <\/b><\/span><\/span><\/span>[C] <\/b><\/span><\/span><\/span>I, III e IV. <\/b><\/span><\/span><\/span>[D] <\/b><\/span><\/span><\/span>II e III. <\/b><\/span><\/span><\/span>[E] <\/b><\/span><\/span><\/span>I e III.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Resolu\u00e7\u00e3o comentada <\/span><\/span><\/span>– (EsPCEx- AMAN \u2013 SP- RJ \u2013 2018\/19)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

01-<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Rendimento de uma m\u00e1quina t\u00e9rmica de Carnot<\/span><\/span><\/span><\/span><\/span><\/p>\n

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R- B<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

02-<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Dire\u00e7\u00e3o e sentido do vetor campo magn\u00e9tico\u00a0<\/span><\/span><\/span><\/span><\/span><\/p>\n

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Intensidade do vetor campo magn\u00e9tico (vetor indu\u00e7\u00e3o magn\u00e9tica)<\/b><\/span><\/span><\/span><\/p>\n

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R- E<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

03-<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Como as <\/b><\/span><\/span><\/span>tr\u00eas pilhas est\u00e3o associadas em paralelo <\/b><\/span><\/span><\/span>(mesma ddp) elas se <\/b><\/span><\/span><\/span>comportam como se fossem uma \u00fanica pilha de ddp U = 25 V.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Observe <\/b><\/span><\/span><\/span>com aten\u00e7\u00e3o os <\/b><\/span><\/span><\/span>resistores e veja que R<\/b><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span> est\u00e1 em s\u00e9rie com R<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span> e R<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sub><\/span> que est\u00e3o em paralelo entre si<\/b><\/span><\/span><\/span> e que o <\/b><\/span><\/span><\/span>volt\u00edmetro est\u00e1 indicando apenas a ddp dessa associa\u00e7\u00e3o paralelo. <\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Veja<\/b><\/span><\/span><\/span> um <\/b><\/span><\/span><\/span>esquema simb\u00f3lico dessa associa\u00e7\u00e3o <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>na sequ\u00eancia das figuras o c\u00e1lculo da resist\u00eancia do resistor equivalente R<\/b><\/span><\/span><\/span>eq<\/b><\/span><\/span><\/sub><\/span> e da corrente el\u00e9trica total i.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Quando<\/b><\/span><\/span><\/span> a <\/b><\/span><\/span><\/span>corrente total i = 2,5 A chega na associa\u00e7\u00e3o paralelo de resistores de mesmo valor (10 \u2126) ela se divide pela metade e cada resistor fica percorrido por i = 1,25 A <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>sob ddp de U <\/b><\/span><\/span><\/span>= R.i = 10.1,25 = <\/b><\/span><\/span><\/span>12,5 V, <\/b><\/span><\/span><\/span>que <\/b><\/span><\/span><\/span>\u00e9 a indica\u00e7\u00e3o do volt\u00edmetro colocado em paralelo em seus terminais.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

O <\/b><\/span><\/span><\/span>amper\u00edmetro indica a corrente que passa por ele que vale i = 2,5 A.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

R- D<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

04-<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Utilizando o teorema da conserva\u00e7\u00e3o da quantidade de movimento antes e depoi<\/b><\/span><\/span><\/span>s do <\/b><\/span><\/span><\/span>proj\u00e9til de m<\/b><\/span><\/span><\/span>p<\/b><\/span><\/span><\/sub><\/span> = 100g e velocidade V<\/b><\/span><\/span><\/span>p<\/b><\/span><\/span><\/sub><\/span> se se <\/b><\/span><\/span><\/span>alojar no bloco de massa m<\/b><\/span><\/span><\/span>b<\/b><\/span><\/span><\/sub><\/span> = 10 kh, inicialmente em repouso (V<\/b><\/span><\/span><\/span>b<\/b><\/span><\/span><\/sub><\/span> = 0)<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Utilizando a conserva\u00e7\u00e3o da energia mec\u00e2nica antes com M = 10,1 kg, velocidade V e altura h = 0 e depois com altura m\u00e1xima de h = 80 cm = 0,8 m e velocidade nula.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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R- E<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

05-<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Equa\u00e7\u00e3o dos pontos conjugados ou equa\u00e7\u00e3o de Gauss para espelhos esf\u00e9ricos<\/b><\/span><\/span><\/span><\/p>\n

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Equa\u00e7\u00e3o do aumento linear transversal<\/b><\/span><\/span><\/span><\/p>\n

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R- A<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

06-<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Empuxo<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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R- C<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

07-<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

I. Correta<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Ondas mec\u00e2nicas<\/b><\/span><\/span><\/span><\/p>\n

Ondas mec\u00e2nicas\u00a0<\/b><\/span><\/span><\/span>s\u00e3o aquelas\u00a0<\/b><\/span><\/span><\/span>que necessitam\u00a0<\/b><\/span><\/span><\/span>de um\u00a0<\/b><\/span><\/span><\/span>meio material para se propagar, transportando energia<\/b><\/span><\/span><\/span>.\u00a0<\/b><\/span><\/span><\/span><\/p>\n

Exemplos: Ondas no ma<\/b><\/span><\/span><\/span>r (o meio \u00e9 a \u00e1gua),\u00a0<\/b><\/span><\/span><\/span>ondas sonoras\u00a0<\/b><\/span><\/span><\/span>(o meio pode ser ar, \u00e1gua, etc.),\u00a0<\/b><\/span><\/span><\/span>ondas em uma corda\u00a0<\/b><\/span><\/span><\/span>(o meio \u00e9 a corda),\u00a0<\/b><\/span><\/span><\/span>etc<\/b><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span><\/p>\n

Todas essas perturba\u00e7\u00f5es s\u00e3o causadas em meios materiais.<\/b><\/span><\/span><\/span><\/p>\n

II. Falsa
\n<\/b><\/span><\/span><\/span><\/p>\n

Ondas eletromagn\u00e9ticas<\/b><\/span><\/span><\/span><\/p>\n

Ondas eletromagn\u00e9ticas\u00a0<\/b><\/span><\/span><\/span>s\u00e3o ondas que\u00a0<\/b><\/span><\/span><\/span>n\u00e3o precisam de um meio material para se propagar, transportando energia.<\/b><\/span><\/span><\/span><\/p>\n

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III. Falsa \u2013 <\/b><\/span><\/span><\/span>micro-ondas <\/b><\/span><\/span><\/span>s\u00e3o <\/b><\/span><\/span><\/span>ondas eletromagn\u00e9ticas <\/b><\/span><\/span><\/span>(veja II).<\/b><\/span><\/span><\/span> <\/b>
\n<\/b><\/span><\/span><\/span>R- A<\/b><\/span><\/span><\/span><\/p>\n

08-<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

I. Falsa <\/b><\/span><\/span><\/span>\u2013 a <\/b><\/span><\/span><\/span>motocicleta se desloca em MRU com velocidade constante de 60 km\/h.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

II. Correta <\/b><\/span><\/span><\/span>\u2013 a <\/b><\/span><\/span><\/span>dist\u00e2ncia percorrida entre 0 e 2 h <\/b><\/span><\/span><\/span>por cada um \u00e9 <\/b><\/span><\/span><\/span>fornecida pela \u00e1rea das figuras:<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

\"ESPCEX\"<\/p>\n

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R- D<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Clique aqui para ver sobre o tema!<\/a><\/p>\n

Confira as v\u00eddeo aulas!<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

ESPCEX-AMAN-2018\/2019 Para ingressar na AMAN o jovem dever\u00e1 realizar um\u00a0concurso p\u00fablico\u00a0para a\u00a0Escola Preparat\u00f3ria de Cadetes do Ex\u00e9rcito (EsPCEx)\u00a0onde ir\u00e1 cursar um ano de Ensino Superior e, obtendo aproveitamento,\u00a0seguir\u00e1 para a AMAN. A\u00a0EsPCEX\u00a0est\u00e1 localizada na cidade de\u00a0Campinas \u2013 SP. Durante o curso, o jovem estar\u00e1 na condi\u00e7\u00e3o de aluno (isto equivale a uma\u00a0gradua\u00e7\u00e3o entre as de 2\u00ba Sargento e 3\u00ba Sargento).<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4337,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-4469","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4469","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/comments?post=4469"}],"version-history":[{"count":3,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4469\/revisions"}],"predecessor-version":[{"id":10260,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4469\/revisions\/10260"}],"up":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4337"}],"wp:attachment":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/media?parent=4469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}